Evidence map›Paper›PMID 34330940›Full record

ArticleScientific reports2021

Maternal blood count parameters of chronic inflammation by gestational age and their associations with risk of preterm delivery in the Japan Environment and Children's Study.

Naho Morisaki, Aurélie Piedvache, Chie Nagata, Takehiro Michikawa, Seiichi Morokuma, Kiyoko Kato, Masafumi Sanefuji, Eiji Shibata, Mayumi Tsuji, Masayuki Shimono and 3 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.9field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 21 citations in OpenAlex.

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  6. Assessıng the predıctıve accuracy of blood-based bıomarkers ın neonatal outcomes for pregestatıonal dıabetes mellıtus.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 17 institutions in 1 country.

Naho MorisakiDepartment of Social Medicine, National Center for Child Health and Development, Tokyo, Japan.
Aurélie PiedvacheDepartment of Social Medicine, National Center for Child Health and Development, Tokyo, Japan.
Chie NagataDepartment of Education for Clinical Research, National Center for Child Health and Development, Tokyo, Japan.
Takehiro MichikawaDepartment of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan.
Seiichi MorokumaDepartment of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. morokuma@med.kyushu-u.ac.jp.
Kiyoko KatoDepartment of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Masafumi SanefujiResearch Center for Environmental and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan.
Eiji ShibataRegional Center for Japan Environment and Children's Study (JECS), University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Mayumi TsujiDepartment of Environmental Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Masayuki ShimonoRegional Center for Japan Environment and Children's Study (JECS), University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Shouichi OhgaDepartment of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Koichi KusuharaDepartment of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Japan Environment and Children’s Study Group
Kyushu University · JPUniversity of Occupational and Environmental Health Japan · JPNational Center For Child Health and Development · JPFukushima Medical University · JPHyogo Medical University · JPKyoto University · JPNational Institute for Environmental Studies · JPChiba University · JPHokkaido University · JPKōchi University · JPKumamoto University · JPNagoya City University · JPTohoku University · JPToho University · JPTottori University Hospital · JPUniversity of Toyama · JPUniversity of Yamanashi · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and lymphocyte-to-monocyte ratio (LMR), are three reportedly predictive biomarkers that reflect subclinical chronic inflammatory burden. However, how these biomarkers change during pregnancy and its clinical utility among pregnant women have been rarely studied. Among 76,853 singleton pregnancies delivered at 28-41 weeks of gestation that were enrolled in the Japan Environment and Children's Study, we observed the distribution of maternal NLR, PLR, and LMR values from week 0 to week 36 using spline curves, as well as their predictive values for preterm delivery with and without hypertensive disorders in pregnancy, placental abruption and intrauterine growth restriction (collectively termed ischemic placental disease due to their shared pathological and pathophysiological features) for measurements at 8-11 weeks, 12-17 weeks, and 18-21 weeks. NLR and PLR increased, whereas LMR decreased, with increasing gestation. High LMR and low NLR observed at 18-21 weeks, but not at earlier gestations, were associated with higher risk of preterm delivery with IPD (odds ratio 1.80 [95% CI 1.02, 3.19] per log[LMR]; odds ratio 0.49 [95% CI 0.29, 0.82] per log[NLR]). All parameters were not predictive of preterm delivery without IPD. We provide a robust reference curve for maternal blood count parameters NLR, PLR, and LMR by gestational week.

Indexed as

AdultFemaleGestational AgeHumansJapanMalePregnancyPregnancy OutcomePremature BirthYoung Adult

Identifiers

PMID34330940
PMCPMC8324902
OpenAlexW3183359477

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.